1231432100515 has 4 divisors (see below), whose sum is σ = 1477718520624. Its totient is φ = 985145680408.

The previous prime is 1231432100501. The next prime is 1231432100551. The reversal of 1231432100515 is 5150012341321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1231432100515 - 2⁷ = 1231432100387 is a prime.

It is a super-3 number, since 3×1231432100515³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123143210047 + ... + 123143210056.

It is an arithmetic number, because the mean of its divisors is an integer number (369429630156).

Almost surely, 2^{1231432100515} is an apocalyptic number.

1231432100515 is a deficient number, since it is larger than the sum of its proper divisors (246286420109).

1231432100515 is an equidigital number, since it uses as much as digits as its factorization.

1231432100515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246286420108.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1231432100515 its reverse (5150012341321), we get a palindrome (6381444441836).

The spelling of 1231432100515 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-two million, one hundred thousand, five hundred fifteen".